A vibrator, or oscillator, is an electronic device that generates oscillating signals, typically in the form of alternating current (AC). These devices are commonly used in various applications, including audio equipment, radio transmitters, and signal generators. They work by converting direct current (DC) into a periodic waveform, which can be used to create sound or transmit information. Vibrators can be classified into different types, such as mechanical vibrators, electromechanical vibrators, and electronic oscillators. Each type has its own method of generating oscillations, but they all serve the fundamental purpose of producing repetitive signals. These signals can be used in everything from clocks to communication systems.